<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
</head>
<body>
	<form action="">
		<label for="txt">姓名：</label><input type="text" id="txt" required="required"><br>
		email：<input type="email "><br>
		<label for="">密码：</label><input type="password"><br>
		<label for="">性别：</label><input type="radio" name="sex">男<input type="radio" name="sex">女<input type="radio" name="sex">人妖<br>
		<label for="">国籍：</label>
		<select name="" id="">
			
			<option value="0">中国</option>
			<option value="0">加拿大</option>
			<option value="0">日本</option>
			<option value="0">美国</option>


		</select><br>
		<select name="" id="">
			<optgroup label="第一组">
				<option value="1">1</option>
				<option value="2">2</option>
				<option value="3">3</option>
				<option value="4">4</option>

			</optgroup>
			<optgroup label="第二组">
				<option value="1">1</option>
				<option value="2">2</option>
				<option value="3">3</option>
				<option value="4">4</option>

			</optgroup>
		</select><br>

		<button>提交</button>
	</form>
</body>
</html>